Lava Worlds: From Early Earth to Exoplanets

Abstract

The magma ocean concept was first conceived to explain the geology of the Moon, but hemispherical or global oceans of silicate melt could be a widespread "lava world" phase of rocky planet accretion, and could persist on planets on short-period orbits around other stars. The formation and crystallization of magma oceans could be a defining stage in the assembly of a core, origin of a crust, initiation of tectonics, and formation of an atmosphere. The last decade has seen significant advances in our understanding of this phenomenon through analysis of terrestrial and extraterrestrial samples, planetary missions, and astronomical observations of exoplanets. This review describes the energetic basis of magma oceans and lava worlds and the lava lake analogs available for study on Earth and Io. It provides an overview of evidence for magma oceans throughout the Solar System and considers the factors that control the rocks these magma oceans leave behind. It describes research on theoretical and observed exoplanets that could host extant magma oceans and summarizes efforts to detect and characterize them. It reviews modeling of the evolution of magma oceans as a result of crystallization and evaporation, the interaction with the underlying solid mantle, and the effects of planetary rotation. The review also considers theoretical investigations on the formation of an atmosphere in concert with the magma ocean and in response to irradiation from the host star, and possible end-states. Finally, it describes needs and gaps in our knowledge and points to future opportunities with new planetary missions and space telescopes to identify and better characterize lava worlds around nearby stars.

arXiv commentAccepted, invited review for Geochemistry. This entry will be updated with journal reference and DOI when available

References in corpus (206)

• The Transiting Exoplanet Survey Satellite
• The Dartmouth Stellar Evolution Database
• The California-Kepler Survey. III. A Gap in the Radius Distribution of Small Planets
• Kepler Mission Design, Realized Photometric Performance, and Early Science
• Kepler planets: a tale of evaporation
• Temperate Earth-sized planets transiting a nearby ultracool dwarf star
• Transiting exoplanets from the CoRoT space mission VIII. CoRoT-7b: the first Super-Earth with measured radius
• Growth Model Interpretation of Planet Size Distribution
• The Mass-Radius Relation for 65 Exoplanets Smaller than 4 Earth Radii
• Extreme Water Loss and Abiotic O${}_2$ Buildup On Planets Throughout the Habitable Zones of M Dwarfs
• KEPLER's First Rocky Planet: Kepler-10b
• Building Terrestrial Planets
• The Minimum-Mass Extrasolar Nebula: In-Situ Formation of Close-In Super-Earths
• Accurate, Empirical Radii and Masses of Planets and their Host Stars with Gaia Parallaxes
• Stellar magnetism: empirical trends with age and rotation
• Equatorial superrotation on tidally locked exoplanets
• The Exoplanet Orbit Database
• Imaging Extrasolar Giant Planets
• State of the Field: Extreme Precision Radial Velocities
• Detection of a NEPTUNE-mass planet in the ${\rho }^1$ Cancri system using the Hobby-Eberly Telescope
• A temperate rocky super-Earth transiting a nearby cool star
• Stellar Flares from the First Tess Data Release: Exploring a New Sample of M-dwarfs
• A stellar-mass-dependent drop in planet occurrence rates
• Transits of Earth-Like Planets
• A map of the large day-night temperature gradient of a super-Earth exoplanet
• The origin of the Moon within a terrestrial synestia
• A Revised Exoplanet Yield from the Transiting Exoplanet Survey Satellite (TESS)
• Hydrogen Greenhouse Planets Beyond the Habitable Zone
• Atmospheric Escape and the Evolution of Close-in Exoplanets
• A Super-Earth Transiting a Naked-Eye Star
• Oxygen isotopic evidence for vigorous mixing during the Moon-forming Giant Impact
• The Extreme Ultraviolet and X-Ray Sun in Time: High-Energy Evolutionary Tracks of a Solar-Like Star
• A Study of the Shortest-Period Planets Found With Kepler
• Highly Siderophile Elements in the Earth's Mantle as a Clock for the Moon-forming Impact
• To Cool is to Accrete: Analytic Scalings for Nebular Accretion of Planetary Atmospheres
• Composition and fate of short-period super-Earths: The case of CoRoT-7b
• Inside-Out Planet Formation
• Possible Disintegrating Short-Period Super-Mercury Orbiting KIC 12557548
• Detection of an atmosphere around the super-Earth 55 Cancri e
• An Earth-sized planet with an Earth-like density
• Chemistry of Silicate Atmospheres of Evaporating Super-Earths
• In-situ Accretion of Hydrogen-Rich Atmospheres on Short-Period Super-Earths: Implications for the Kepler-11 Planets
• Detection of a transit of the super-Earth 55 Cnc e with Warm Spitzer
• Melting and Mixing States of the Earth's Mantle after the Moon-Forming Impact
• Abundance, distribution, and origin of 60Fe in the solar protoplanetary disk
• Tidally Heated Terrestrial Exoplanets: Viscoelastic Response Models
• They are Small Worlds After All: Revised Properties of Kepler M Dwarf Stars and their Planets
• A Possible Carbon-rich Interior in Super-Earth 55 Cancri e
• Chemical Clues on the Formation of Planetary Systems: C/O vs Mg/Si for HARPS GTO Sample
• A Rocky Composition for an Earth-sized Exoplanet
• A Study of the Accuracy of Mass-Radius Relationships for Silicate-Rich and Ice-Rich Planets up to 100 Earth Masses
• A planetesimal orbiting within the debris disc around a white dwarf star
• Born Dry in the Photo-Evaporation Desert: Kepler's Ultra-Short-Period Planets Formed Water-Poor
• The extreme physical properties of the CoRoT-7b super-Earth
• Disentangling stellar activity and planetary signals
• Predictions of the atmospheric composition of GJ 1132b
• A nearby M star with three transiting super-Earths discovered by K2
• Transits and Occultations of an Earth-Sized Planet in an 8.5-Hour Orbit
• A perspective from extinct radionuclides on a Young Stellar Object: The Sun and its accretion disk
• The 4.5 $\mu$m full-orbit phase curve of the hot Jupiter HD 209458b
• Determining the Mass of Kepler-78b With Nonparametric Gaussian Process Estimation
• Hint of a transiting extended atmosphere on 55 Cancri b
• Variability in the super-Earth 55 Cnc e
• Main-Sequence Effective Temperatures from a Revised Mass-Luminosity Relation Based on Accurate Properties
• Observations of Exoplanet Atmospheres
• The K2-ESPRINT Project. I. Discovery of the Disintegrating Rocky Planet K2-22b with a Cometary Head and Leading Tail
• A comprehensive study of Kepler phase curves and secondary eclipses -- temperatures and albedos of confirmed Kepler giant planets
• On the Mass of CoRoT-7b
• Transiting extrasolar planetary candidates in the Galactic bulge
• A water budget dichotomy of rocky protoplanets from ${}^{26}$Al-heating
• Differentiation of Vesta: Implications for a shallow magma ocean
• Tidal Heating of Terrestrial Extra-Solar Planets and Implications for their Habitability
• Outgassing of Ordinary Chondritic Material and Some of its Implications for the Chemistry of Asteroids, Planets, and Satellites
• Atmosphere-interior exchange on hot rocky exoplanets
• Multiple Impact Origin for the Moon
• The Atmospheres of Earth-like Planets after Giant Impact Events
• The Roche limit for close-orbiting planets: Minimum density, composition constraints, and application to the 4.2-hour planet KOI 1843.03
• Magnetospheric Truncation, Tidal Inspiral, and the Creation of Short and Ultra-Short Period Planets
• Oxygen fugacities of extrasolar rocks: Evidence for an Earth-like geochemistry of exoplanets
• Catastrophic Evaporation of Rocky Planets
• Theoretical Spectra of Terrestrial Exoplanet Surfaces
• The 55 Cnc system reassessed
• Tidal heating of Earth-like exoplanets around M stars: Thermal, magnetic, and orbital evolutions
• Kepler-78 and the Ultra-Short-Period Planets
• Why is it so Cold in Here?: Explaining the Cold Temperatures Retrieved from Transmission Spectra of Exoplanet Atmospheres
• Near-equilibrium isotope fractionation during planetesimal evaporation
• Exoplanet secondary atmosphere loss and revival
• Thermally-driven atmospheric escape: Transition from hydrodynamic to Jeans escape
• Al-26 and the formation of the Solar System from a molecular cloud contaminated by Wolf-Rayet winds
• Hydrogen Cyanide in Nitrogen-Rich Atmospheres of Rocky Exoplanets
• An Updated Study of Potential Targets for Ariel
• An Investigation into the Radial Velocity Variations of CoRoT-7
• Resolving the Surfaces of Extrasolar Planets With Secondary Eclipse Light Curves
• Planets Formed in Habitable Zones of M Dwarf Stars Probably are Deficient in Volatiles
• Improved precision on the radius of the nearby super-Earth 55 Cnc e
• A Volcanic Hydrogen Habitable Zone
• An Analytic Radiative-Convective Model for Planetary Atmospheres
• Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations
• Onset of giant planet migration before 4480 million years ago
• Large Impacts around a Solar Analog Star in the Era of Terrestrial Planet Formation
• Redox evolution via gravitational differentiation on low mass planets: implications for abiotic oxygen, water loss and habitability
• Differentiation of Planetesimals and the Thermal Consequences of Melt Migration
• The Evolution of Flare Activity with Stellar Age
• Effects of Bulk Composition on The Atmospheric Dynamics on Close-in Exoplanets
• A new class of Super-Earths formed from high-temperature condensates: HD219134 b, 55 Cnc e, WASP-47 e
• A Semi-Analytical Model of Visible-Wavelength Phase Curves of Exoplanets and Applications to Kepler-7 b and Kepler-10 b
• Statistical Characterization of Hot Jupiter Atmospheres using Spitzer's Secondary Eclipses
• Superabundance of Exoplanet Sub-Neptunes Explained by Fugacity Crisis
• On the Direct Imaging of Tidally Heated Exomoons
• The 55 Cancri Planetary System: Fully Self-Consistent N-body Constraints and a Dynamical Analysis
• Homogeneous Analysis of Hot Earths: Masses, Sizes, and Compositions
• The Distribution of Basaltic Asteroids in the Main Belt
• Prospects for Characterizing the Atmosphere of Proxima Centauri b
• Common 0.1 bar Tropopause in Thick Atmospheres Set by Pressure-Dependent Infrared Transparency
• A continuum model of multi-phase reactive transport in igneous systems
• Deciphering thermal phase curves of dry, tidally locked terrestrial planets
• On the Impact Origin of Phobos and Deimos I: Thermodynamic and Physical Aspects
• Ultra-short-period planets from secular chaos
• Re-assessing the radial-velocity evidence for planets around CoRoT-7
• Detection of a Westward Hotspot Offset in the Atmosphere of a Hot Gas Giant CoRoT-2b
• Where Did The Moon Come From?
• A Case for an Atmosphere on Super-Earth 55 Cancri e
• Bayesian analysis of interiors of HD 219134b, Kepler-10b, Kepler-93b, CoRoT-7b, 55 Cnc e, and HD 97658b using stellar abundance proxies
• Search for an exosphere in sodium and calcium in the transmission spectrum of exoplanet 55 Cancri e
• Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating
• What factors affect the duration and outgassing of the terrestrial magma ocean?
• Atmospheric mass loss due to giant impacts: the importance of the thermal component for hydrogen-helium envelopes
• The orbital phases and secondary transit of Kepler-10b - A physical interpretation based on the Lava-ocean planet model -
• Interior Structures and Tidal Heating in the TRAPPIST-1 Planets
• Larger mutual inclinations for the shortest-period planets
• Mineralogy and Surface Composition of Asteroids
• V-type asteroids in the middle Main Belt
• Atmospheres of Hot Super-Earths
• Sodium and Potassium Signatures of Volcanic Satellites Orbiting Close-in Gas Giant Exoplanets
• Towards Understanding Stellar Radial Velocity Jitter as a Function of Wavelength: The Sun as a Proxy
• The Center of Light: Spectroastrometric Detection of Exomoons
• CoRoT-7 b: Super-Earth or Super-Io?
• The Habitable Exoplanet Observatory (HabEx) Mission Concept Study Interim Report
• Carbon and Oxygen Abundances in Cool Metal-rich Exoplanet Hosts: A Case Study of the C/O Ratio of 55 Cancri
• Revisiting rho 1 Cancri e: A New Mass Determination Of The Transiting super-Earth
• The discovery and mass measurement of a new ultra-short-period planet: EPIC~228732031b
• Hydrodynamic escape of water vapor atmospheres near very active stars
• An Extreme Precision Radial Velocity Pipeline: First Radial Velocities from EXPRES
• Tables of phase functions, opacities, albedos, equilibrium temperatures, and radiative accelerations of dust grains in exoplanets
• Chemical Diversity of Super-Earths As a Consequence of Formation
• Impact-induced melting during accretion of the Earth
• Massive Satellites of Close-In Gas Giant Exoplanets
• Detecting the spin-orbit misalignment of the super-Earth 55 Cnc e
• Silicate Melting and Vaporization during Rocky Planet Formation
• Modeling the albedo of Earth-like magma ocean planets with H2O-CO2 atmospheres
• Rayleigh-Bénard convection in a creeping solid with melting and freezing at either or both its horizontal boundaries
• A census of Coronal Mass Ejections on solar-like stars
• On planetary mass determination in the case of super-Earths orbiting active stars. The case of the CoRoT-7 system
• 55 Cancri: A Coplanar Planetary System that is Likely Misaligned with its Star
• Confirming Variability in the Secondary Eclipse Depth of the Super-Earth 55 Cancri e
• Effective induction heating around strongly magnetized stars
• Mass, energy, and momentum capture from stellar winds by magnetized and unmagnetized planets: implications for atmospheric erosion and habitability
• An Independent Planet Search In The Kepler Dataset. I. A hundred new candidates and revised KOIs
• A Catalog of M-dwarf Flares with ASAS-SN
• Rossiter-McLaughlin Observations of 55 Cnc e
• Low albedos of hot to ultra-hot Jupiters in the optical to near-infrared transition regime
• Mantle Convection, Plate Tectonics, and Volcanism on Hot Exo-Earths
• On the Emergent Spectra of Hot Protoplanet Collision Afterglows
• A More Informative Map: Inverting Thermal Orbital Phase and Eclipse Lightcurves of Exoplanets
• Atmospheric Erosion by Giant Impacts onto Terrestrial Planets
• Dusty tails of evaporating exoplanets. II. Physical modelling of the KIC 12557548b light curve
• Atmosphere loss in planet-planet collisions
• A Catalog of Spectra, Albedos, and Colors of Solar System Bodies for Exoplanet Comparison
• Erosion of an exoplanetary atmosphere caused by stellar winds
• Some optical properties of graphite from IR to millimetric wavelengths
• Comprehensive Wide-Band Magnitudes and Albedos for the Planets, With Applications to Exo-Planets and Planet Nine
• Direct imaging of molten protoplanets in nearby young stellar associations
• Stellar coronal mass ejections II. Constraints from spectroscopic observations
• Atmospheric compositions and observability of nitrogen dominated ultra-short period super-Earths
• SPIRou: a nIR spectropolarimeter / high-precision velocimeter for the CFHT
• ESPRESSO on VLT: An Instrument for Exoplanet Research
• Statistical Eclipses of Close-in Kepler Sub-Saturns
• Constraints on the exosphere of CoRoT-7b
• Ohmic Dissipation in Mini-Neptunes
• Kepler-1649b: An Exo-Venus in the Solar Neighborhood
• Multi-season optical modulation phased with the orbit of the super-Earth 55 Cnc e
• The Detection of Earth-mass Planets around Active Stars: The Mass of Kepler-78b
• Inferring the Composition of Disintegrating Planet Interiors from Dust Tails with Future James Webb Space Telescope Observations
• A Search for wide visual companions of exoplanet host stars - The Calar Alto Survey
• Characterization of Exoplanets: Secondary Eclipses
• On the impact origin of Phobos and Deimos III: resulting composition from different impactors
• Ohmic heating of asteroids around magnetic stars
• On the potentially dramatic history of the super-Earth rho 55 Cancri e
• Planetesimals Around Stars with TESS (PAST): I. Transient Dimming of a Binary Solar Analog at the End of the Planet Accretion Era
• Survivability of radio-loud planetary cores orbiting white dwarfs
• On The Feasibility of Exomoon Detection Via Exoplanet Phase Curve Spectral Contrast
• Impact-driven planetary desiccation: The origin of the dry Venus
• Radial Velocities as an Exoplanet Discovery Method
• How to Characterize the Atmosphere of a Transiting Exoplanet
• High-energy environment of super-Earth 55 Cnc e I: Far-UV chromospheric variability as a possible tracer of planet-induced coronal rain
• Reflected Light Phase Curves in the TESS Era
• Tidally-Distorted, Iron-Enhanced Exoplanets Closely Orbiting Their Stars
• Non-Vestoid candidate asteroids in the inner main belt
• The KIC 8462852 Light Curve From 2015.75 to 2018.18 Shows a Variable Secular Decline
• The circumstellar environment of 55 Cnc: The super-Earth 55 Cnc e as a primary target for star-planet interactions
• Monitoring of the D Doublet of Neutral Sodium during Transits of Two "Evaporating" Planets
• Periodic outgassing as a result of unsteady convection in Ray Lava Lake, Mount Erebus, Antarctica
• Crystallization and cooling conditions for diogenite formation in the turbulent magma ocean of asteroid 4 Vesta
• The Variable Wavelength Dependence of the Dipping event of KIC 8462852
• The Gaia-Kepler Stellar Properties Catalog. I. Homogeneous Fundamental Properties for 186,301 Kepler Stars
• Astro2020 Science White Paper: Toward Finding Earth 2.0: Masses and Orbits of Small Planets with Extreme Radial Velocity Precision

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• Caught in the Act: Core-powered Mass-loss Predictions for Observing Atmospheric Escape
• TOI-561 b: A Low Density Ultra-Short Period "Rocky" Planet around a Metal-Poor Star
• The distribution of volatile elements during rocky planet formation
• Magma ocean evolution at arbitrary redox state
• Interior dynamics of super-Earth 55 Cancri e
• Bioverse: The Habitable Zone Inner Edge Discontinuity as an Imprint of Runaway Greenhouse Climates on Exoplanet Demographics
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• Volatile atmospheres of lava worlds
• A hot Mars-sized exoplanet transiting an M dwarf
• Diversity of low-mass planet atmospheres in the C-H-O-N-S-Cl system with interior dissolution, nonideality, and condensation: Application to TRAPPIST-1e and sub-Neptunes
• A general machine learning model of aluminosilicate melt viscosity and its application to the surface properties of dry lava planets
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• Water solubility in silicate melts: The effects of melt composition under reducing conditions and implications for nebular ingassing on rocky planets
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• From CO${}_2$- to H${}_2$O-dominated atmospheres and back -- How mixed outgassing changes the volatile distribution in magma oceans around M dwarf stars
• Ocean Circulation on Tide-locked Lava Worlds: 3D Modeling with a Simple Boundary Iteration Method
• On the importance of laboratory experiments for interpreting exoplanet observations
• What the Solar System Can Teach Us About Rocky Exoplanets
• Radioactive Planet Formation
• An internal heating mechanism operating in ultra-short-period planets orbiting magnetically active stars
• Deep two-phase, hemispherical magma oceans on lava planets
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